public static IEnumerable <Part> AttachParts(ParallelSpaceshipParameters param, IEnumerable <Part> parts, IEnumerable <Part> prefabs)
{
var attached = new List <Part>();
foreach (var part in parts)
{
foreach (var point in part.attachmentPoints)
{
if (!point.Blocked && param.attachmentProbability >= Random.value)
{
var modules = new List <Part>(prefabs.Where(p => p.type == PartType.Attachment));
var i = Random.Range(0, modules.Count);
var module = modules.ElementAt(i);
var rotation = part.transform.rotation * point.rotation;
var position = part.transform.TransformPoint(point.position);
var attachment = Object.Instantiate(module, position, rotation) as Part;
attached.Add(attachment);
if (point.symmetric)
{
var negPos = point.position;
negPos.x = -negPos.x;
position = part.transform.TransformPoint(negPos);
attachment = Object.Instantiate(module, position, rotation) as Part;
attached.Add(attachment);
}
}
}
}
return(attached);
}
public static Transform GenerateSpaceship(int seed, Part[] partPrefabs, ParallelSpaceshipParameters parameters)
{
Random.seed = seed;
var rootNode = SkeletonGenerator.GenerateSkeleton(parameters);
var parts = new List <Part>();
parts.AddRange(PartPlacer.PlaceParts(parameters, rootNode, partPrefabs));
parts.AddRange(PartAttacher.AttachParts(parameters, parts, partPrefabs));
parts.AddRange(Mirror(parts));
var ship = new GameObject("Spaceship");
ship.transform.position = rootNode.transform.position;
ship.transform.rotation = rootNode.transform.rotation;
foreach (var p in parts)
{
p.transform.parent = ship.transform;
}
rootNode.KillAllNodes();
return(ship.transform);
}
public static IEnumerable <Part> PlaceParts(ParallelSpaceshipParameters param, SkeletonNode rootNode, IEnumerable <Part> prefabs)
{
var parts = new List <Part>();
parts.AddRange(PlaceSupports(rootNode, prefabs));
parts.AddRange(PlaceStructurals(param, rootNode, prefabs));
return(parts);
}
static IEnumerable <Part> PlaceStructurals(ParallelSpaceshipParameters param, SkeletonNode parent, IEnumerable <Part> prefabs)
{
var placedParts = new List <Part>();
placedParts.AddRange(RecursivePlaceStructural(param, parent, prefabs));
foreach (var wing in parent.wingNodes)
{
placedParts.AddRange(PlaceStructurals(param, wing, prefabs));
}
return(placedParts);
}
public static SkeletonNode GenerateSkeleton(ParallelSpaceshipParameters param)
{
// base node
var scalefactor = Random.Range(1 - param.scalefactor, 1 + param.scalefactor);
var rootNode = SkeletonNode.Create(new Vector3(0, 0, 0), scalefactor, PartType.Engine);
// rear wing shape
RecursiveCreateWings(param, rootNode, param.maxWidth);
// front nodes
RecursiveCreateFronts(param, rootNode, param.maxLength);
// create mirrored skeleton for visualisation
// rootNode.Mirror ();
return(rootNode);
}
/// <summary>
/// Creates the central structure and duplicates the rear shape of the wings
/// </summary>
/// <param name="param">Parameter.</param>
/// <param name="parent">Parent.</param>
static void RecursiveCreateFronts(ParallelSpaceshipParameters param, SkeletonNode parent, int leftLength)
{
// create new SkeletonNode
var scalefactor = Random.Range(1 - param.scalefactor, 1 + param.scalefactor);
var distance = Random.Range(param.minDistance, param.maxDistance);
var position = parent.transform.position + parent.transform.forward * distance;
// select node type
PartType type;
if (leftLength > 0 &&
parent.wingNodes.Count > 0 &&
param.structuralProbability >= Random.value)
{
type = PartType.Intersection;
}
else
{
type = PartType.Cockpit;
}
var frontNode = SkeletonNode.Create(position, scalefactor, type);
parent.AddFront(frontNode);
// create subwing structure
foreach (var wing in parent.wingNodes)
{
if (type == PartType.Cockpit)
{
distance = Random.Range(param.minDistance, param.maxDistance);
}
RecursiveCreateSubwings(param, wing, parent, distance);
}
// prevent unwinged intersections
if (parent.wingNodes.Count == 0)
{
frontNode.type = PartType.Cockpit;
}
// recursive create next frontNode
else if (type == PartType.Intersection)
{
RecursiveCreateFronts(param, frontNode, leftLength - 1);
}
}
/// <summary>
/// Duplicates the shape of the wings for each row
/// </summary>
/// <param name="param">Parameter.</param>
/// <param name="parent">Parent.</param>
/// <param name="gParent">G parent.</param>
/// <param name="distance">Distance.</param>
static void RecursiveCreateSubwings(ParallelSpaceshipParameters param, SkeletonNode parent, SkeletonNode gParent, float distance)
{
var scalefactor = Random.Range(1 - param.scalefactor, 1 + param.scalefactor);
var position = parent.transform.position + parent.transform.forward * distance;
// select node type
PartType type;
if (gParent.frontNode.type != PartType.Intersection ||
param.structuralProbability <= Random.value)
{
type = PartType.Cockpit;
}
else
{
type = PartType.Intersection;
}
var subwingNode = SkeletonNode.Create(position, scalefactor, type);
parent.AddFront(subwingNode);
// add connection
if (type == PartType.Intersection)
{
gParent.frontNode.AddWing(subwingNode);
}
// recursive create subwings
foreach (var wing in parent.wingNodes)
{
if (type == PartType.Cockpit)
{
distance = Random.Range(param.minDistance, param.maxDistance);
}
RecursiveCreateSubwings(param, wing, parent, distance);
}
}
/// <summary>
/// Creates the shape of the wings at the rear section of the skeleton
/// </summary>
/// <param name="param">Parameter.</param>
/// <param name="parent">Parent.</param>
static void RecursiveCreateWings(ParallelSpaceshipParameters param, SkeletonNode parent, int leftWings)
{
var nWings = param.maxWings;
while (nWings > 0 && leftWings > 0 && param.wingProbability >= Random.value)
{
var scalefactor = Random.Range(1 - param.scalefactor, 1 + param.scalefactor);
var distance = Random.Range(param.minDistance, param.maxDistance);
var xRot = Random.Range(param.minXAngle, param.maxXAngle);
var yRot = Random.Range(param.minYAngle, param.maxYAngle) + 90F;
var zRot = 0F; // !
var position = parent.transform.position + (Quaternion.Euler(xRot, yRot, zRot) * parent.transform.forward * distance);
parent.AddWing(SkeletonNode.Create(position, scalefactor, PartType.Engine));
nWings--;
}
foreach (var wing in parent.wingNodes)
{
RecursiveCreateWings(param, wing, leftWings - 1);
}
}
static IEnumerable <Part> RecursivePlaceStructural(ParallelSpaceshipParameters param, SkeletonNode parent, IEnumerable <Part> prefabs, Part rear = null)
{
var placedParts = new List <Part>();
var frontPosition = parent.frontNode.transform.position;
var rearPosition = parent.transform.position;
var vector = frontPosition - rearPosition;
var rotation = parent.transform.rotation;
// place rear connector & engine by probability
if (rear == null)
{
var intersection = GetRandomPart(prefabs, PartType.Intersection);
if (intersection == null)
{
return(placedParts);
}
rear = Instantiate(intersection, rearPosition, rotation, placedParts, parent.scalefactor);
if (param.engineProbability > Random.value)
{
// place engine
var engine = GetRandomPart(prefabs, PartType.Engine);
if (engine == null)
{
return(placedParts);
}
var enginePos = rearPosition - vector.normalized * (rear.radius + engine.radius * parent.scalefactor);
Instantiate(engine, enginePos, rotation, placedParts, parent.scalefactor);
}
}
// place front depending on type
PartType frontType;
if (parent.frontNode.type == PartType.Intersection)
{
frontType = parent.frontNode.type;
}
else if (param.cockpitProbability >= Random.value)
{
frontType = PartType.Cockpit;
}
else
{
frontType = PartType.Ending;
}
var frontPart = GetRandomPart(prefabs, frontType);
if (frontPart == null)
{
return(placedParts);
}
var front = Instantiate(frontPart, frontPosition, rotation, placedParts, parent.frontNode.scalefactor);
// update positions & vector
rearPosition += vector.normalized * rear.radius;
frontPosition -= vector.normalized * front.radius;
vector = frontPosition - rearPosition;
// calculate median scaling of vector parts
var scale = (parent.scalefactor + parent.frontNode.scalefactor) / 2;
// virtualize parts for vector
var fillers = new List <Part>();
var filled = 0F;
do
{
var part = GetRandomPart(prefabs, PartType.Structural);
if (part == null)
{
return(placedParts);
}
fillers.Add(part);
filled += 2 * part.radius * scale;
} while (filled < (vector.magnitude - filled) * fillers.Count * 2); // median part radius > left space
// calculate final scalefactor
scale *= vector.magnitude / filled;
// fill vector with parts
foreach (var prefab in fillers)
{
var partPos = rearPosition + vector.normalized * prefab.radius * scale;
var part = Instantiate(prefab, partPos, rotation, placedParts, scale);
// reposition insert point
rearPosition += vector.normalized * 2 * part.radius;
}
// call next
if (parent.frontNode.frontNode != null)
{
placedParts.AddRange(RecursivePlaceStructural(param, parent.frontNode, prefabs, front));
}
return(placedParts);
}
